Conventional Memories

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Index

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T4400SX

(No longer manufactured) (4400)

General Information

Model number: T4400SX LCD 80MB - PA1102U (FCC ID# CJ6UK904)

T4400SX PDP 80MB - PA1102UW (FCC ID# CJ6UK905)

T4400SX LCD 120MB - PA1103U (FCC ID# CJ6UK904)

T4400SX PDP 120MB - PA1103UW (FCC ID# CJ6UK905)
Dimensions: 11.7"W x 8.3"D x 2.2"H
Weight: 7.25 lbs. with battery pack
Voltage: Computer DC input - 21VDC, 1.9A

Universal AC adapter - 100-240 VAC 50-60 Hz
Battery: Removable rechargeable NiCD battery pack
CPU: I486 SX-25 (8KB internal cache), Upgradeable to i486DX-25 for coprocessor feature
RAM memory: 2MB standard (640KB conventional; 1280KB extended or HardRAM; 128KB shadow ROM) Memory expandable up to 18MB via one credit card style memory slot when optional 2MB, 4MB, 8MB, or 16MB card is added
Video RAM: 256KB
Number of keys: 82
Keyboard type: 101-key keyboard compatible
Drives: One 1.44MB 3.5" floppy disk drive

One 80MB or one 120MB hard disk drive
Standard features: AutoResume electronic bookmark

HardRAM

Automatic display and hard drive shutdown CPU sleep mode,

Intelligent power supply with battery "gas gauge"

3.5 hrs. battery life; recharges in 1.5 hrs.

Low battery warning light and audible alarm

Password protection

Product Support

U.S. and International limited warranty

Toshiba exceptional care program (requires enrollment)
Operating system included: Toshiba MS-DOS 5.0

Software Compatibility

Compatible with software written for the IBM PC/XT/AT using VGA, EGA, or CGA resolution graphics modes

Interfaces

VGA color video port

RS-232-C serial port

Parallel printer/external diskette or tape drive port

Numeric keypad/101-key keyboard adapter port

Built-in modem slot - "E" form factor ("D" form factor compatible)

150 pin expansion interface connector

PS/2 mouse port

Credit card style memory slot

Fluorescent Sidelit Supertwist LCD Display (T4400SX LCD)

Display area: 7.7"W x 5.75"H; 9.5" diagonal
Resolution: 640 x 480
Dot dimension: .24mm x .24mm
Dot pitch: .30mm x .30mm
Aspect ratio: 1 : 1
Contrast: 15 : 1
Gray scales: 16 gray scales in 640 x 480, 64 in 320 x 200 resolution

Gas Plasma Display Panel Display (T4400SX PDP)

Display area: 7.7"W x 5.75"H; 9.5" diagonal
Resolution: 640 x 480
Dot dimension: .24mm x .24mm
Dot pitch: .30mm x .30mm
Aspect ratio: 1 : 1
Contrast: 100:1
Gray scales: 16
Simultaneous display to external monitor

2.5" 80MB Hard Disk Drive

Conner Peripherals HDD: CP-2084
Interface: IDE
Average access time: 19ms
Recording method: RLL 2-7

2.5" 120MB Hard Disk Drive

Toshiba HDD: MK-2124FC
Interface: IDE
Average access time: 17ms
Recording method: RLL 2-7

or

Conner Peripherals HDD: CP-2124
Interface: IDE
Average access time: 17ms
Recording method: RLL 2-7

Soft Switches

1) Change speed

Fn + PgUp 25MHz CPU Speed, 8MHz bus speed
Fn + PgDn 25MHz CPU Speed, 4MHz bus speed

2) Pop-up window

Fn + Esc Toggles pop-up window

3) Keypad overlay

Fn + F10 Toggles keypad overlay
Fn + F11 Num lock
Fn + F12 Scroll lock

4) FN key

Fn + Alt Simulate IBM enhanced keyboard Right ALT
Fn + Ctrl Simulate IBM enhanced keyboard Right CTRL
Fn + Enter Simulate IBM enhanced keyboard numeric keypad Enter

Hardware Switches and Controls

1) Power on/off

Located on left side of computer

2) Reset

Located on back of computer

3) LCD brightness and contrast dials

Located on right side of display on LCD models only

Environmental Specifications

1) Operating condition

Ambient temperature: 41 to 95 degrees F. 5 to 35 degrees C.
Relative Humidity: 20% to 80% non-condensing
Altitude (from sea level): -200 to 10,000 ft. (-60 to 3,000 meters)

2) Non-Operating condition

Ambient temperature: -4 to 140 degrees F. -20 to 60 degrees C.
Relative Humidity: 8% to 80% non-condensing
Altitude (from sea level): 30,000 ft. (10,000 meters) max.

3) Wet bulb temperature condition

Ambient temperature: 79 degrees F. (26 degrees C.) maximum

Options and Extra Accessories

PC-PA2003U 2MB memory card (no longer manufactured)
PC-PA2004U 4MB memory card
PC-PA2005U 8MB memory card
PC-PA2010U 16MB memory card
PC-T24D 2400 bps Hayes compatible dedicated built-in modem (Bell or CCITT) (no longer manufactured)
PC-T24D/F 2400bps data/9600bps send/receive FAX built-in modem
PC-T144D/F 14400 bps send/receive FAX built-in modem (no longer manufactured)
PC-T24D/X or

PC-T24D/X2

 2400 bps Hayes compatible built-in modem w/enhanced protocol (MNP5, V.42 bis)

(both no longer manufactured)
PC-TCL24A Audiovox Axsys cellular connection for use with T24D/X modem (no longer manufactured)
PC-TCL24M Motorola Axsys cellular connection for use with T24D/X modem (no longer manufactured)
PC-TCL24N NEC Axsys cellular connection for use with T24D/X modem (no longer manufactured)
PC-TCL24U Uniden Axsys cellular connection for use with T24D/X modem (no longer manufactured)
PC-PA7225U 5.25" 360KB external FDD with 18VDC adapter
PC-PA2407URA Battery pack - 2400 mAh
PC-PA900L Battery pack recharger with AC adapter (no longer manufactured)
PC24-PA2408U Universal AC adapter 21 VDC
PC24-PA800L Auto adapter - 12 VAC (no longer manufactured)
PC-PA801L Statpower Prowatt 125 auto adapter
PC-PA2113 Toshiba SCSI adapter (replaces PC-PA2112)
PC-PA7354E 17-key numeric keypad
PC-PA8718U 101-key keyboard adapter with external power supply
PC-PA722L TD80 external tape backup drive (no longer manufactured)
PC-PA3305L PC Guardian computer lock (no longer manufactured)
PC-PA2700UXZ Desk Station lV (replaces PC-PA2700UX)
PC-PA2701U Desk Station IV (replaces PC-PA2700UXZ)
PC-PA270L Axonix Cablemate port replicator
PC-PA877LX Fabric carrying case (no longer manufactured)
PC-PA180B Blue PC Pack carrying case
PC-PA180R Red PC Pack carrying case
PC-PA1000L Leather carrying case (no longer manufactured)
PC-PA1050L Leather attache case
PC13-PA874L Executive leather portfolio (no longer manufactured)
PR-PA2750U ExpressWriter 201 portable printer (no longer manufactured)
PC-SW013 Toshiba MS-DOS 5.0 (no longer manufactured)
PC-SW015 Toshiba MS-DOS 5.0 (no longer manufactured)
PC-SW007 Toshiba MS-DOS 4.01 (no longer manufactured)
PC-SW004 Toshiba BASIC 3.30 (no longer manufactured)
PC-ASP44DX Intel 486DX upgrade kit for I486 SX models (no longer manufactured)

System Memory Map

Address range

 Space (Kilobytes)

Used For:
'00000000'

'0009FFFF'

 640 Conventional memory
'000A0000'

'000BFFFF'

 128 Video RAM for VGA
'000C0000'

'000C7FFF'

 32 VGA BIOS ROM
'000C8000'

'000DFFFF'

 96 Reserved
'000E0000'

'000E7FFF'

 32 HardRAM window
'000E8000'

'000EFFFF'

 32 Backup RAM
000F0000'

'000FFFFF'

 64 System BIOS ROM
'00100000'

'001FFFFF'

 1,024 System working memory
'00200000'

'0011FFFF'

 16,384 Optional working memory
'00120000'

'FFFEFFFF'

   Memory expansion in expansion port
'FFFF0000'

'FFFFFFFF'

 64 System BIOS ROM (Duplicated)

Interrupts

Interrupt Level Assigned To:
-- NMI RAM Parity Error; I/O Channel Error
  0 Timer
  1 Keyboard
  2 PIC 2 for levels 8 to 15
1 3 Secondary Communications (COM 2)
  4 Primary Communications (COM 1)
  5 PRT 2
  6 FDC
  7 PRT 1
  8 RTC
  9 Software Redirect to INT '0A'
2 10 (Reserved)
  11 (Reserved)
  12 PS/2 Mouse
  13 NDP of 80486DX
  14 HDC
  15 (Reserved)
   

I/O Port Assignment

Port Address

From / To

Device / Function
'000' / '01F' 82C37 : DMA Controller 1
'020' / '03F' 82C59 : PIC 1
'040' / '05F' 82C54 : Timer
'060' / '06F' KBC
'070' NMI
'070' / '07F' RTC
'080' / '09F' DMA Page Register
'0A0' / '0BF' 82C59 : PIC 2
'0C0' / '0DF' 82C37 : DMA Controller 2
'0E0' / '0EF' Special Register
'0F0' / '0F7' NDP
'100' / '1EF' VGA
'1F0' / '1FF' HDC
'200' / '207' Game I/O
'208' / '20F' (Not Used)
'210' / '217' Expansion Unit
'218' / '21F' (Not Used)
'220' / '257' (Not Used)
'258' / '25F' (Not Used)
'260' / '267' (Not Used)
'268' / '26F' (Not Used)
'270' / '277' (Not Used)
'278' / '27F' Parallel PRT 2
'280' / '2A7' (Not Used)
'2A8' / '2AF' Reserved for EMS
'2B0' / '2B7' (Not Used)
'2B8' / '2BF' Reserved for EMS
'2C0' / '2DF' (Not Used)
'2E0' / '2E7' (Not Used)
'2E8' / '2EF' Reserved for EMS
'2F0' / '2F7' (Not Used)
'2F8' / '2FF' Serial Port 2 (COM 2)
'300' / '31F' Prototype card
'320' / '32F' XT type HDC
'330' / '337' (Not Used)
'338' / '33F' Serial Port 3 (COM 3)
'340' / '377' (Not Used)
'378' / '37F' Parallel PRT 1
'380' / '38F' SDLC, Bisynchronous 2
'390' / '39F' (Not Used)
'3A0' / '3AF' Bisynchronous 1
'3B0' / '3BF' MDA, PRT
'3C0' / '3DF' CGA, EGA, VGA
'3E0' / '3E7' (Not Used)
'3E8' / '3FF' Serial Port 3 (COM 3)
'3F0' / '3F7' FDC
'3F8' / '3FF' Serial Port 1 (COM1)
'400' / '47F' (Not Used)
'480' / '49F' DMA Hi-Page Register

1notice. Copyright 1994, 1995 TAIS.